The "apartment comedy" centers around Kōtarō Satomi, a boy who started to live by himself to attend a high school. He fortunately discovered a very cheap, tiny (six-mat or rokujyōma) room for 5,000 yen (about US50) a month, and began his new life there. However, when he moved into that room "1X6" in the Korona complex, some unexpected "roommates" began appearing one by one.